path: root/builtin/checkout.c
diff options
authorNguyễn Thái Ngọc Duy <>2013-07-09 15:29:00 (GMT)
committerJunio C Hamano <>2013-07-09 16:12:48 (GMT)
commit9c5e6c802cde9881785b7f1b3278b97be4aabd82 (patch)
tree2eeb9fb013fffc711464d83141690fde1c72ce82 /builtin/checkout.c
parentf8abaebab3fe1a1b873f9636ea410ac4007c8fa8 (diff)
Convert "struct cache_entry *" to "const ..." wherever possible
I attempted to make index_state->cache[] a "const struct cache_entry **" to find out how existing entries in index are modified and where. The question I have is what do we do if we really need to keep track of on-disk changes in the index. The result is - diff-lib.c: setting CE_UPTODATE - name-hash.c: setting CE_HASHED - preload-index.c, read-cache.c, unpack-trees.c and builtin/update-index: obvious - entry.c: write_entry() may refresh the checked out entry via fill_stat_cache_info(). This causes "non-const struct cache_entry *" in builtin/apply.c, builtin/checkout-index.c and builtin/checkout.c - builtin/ls-files.c: --with-tree changes stagemask and may set CE_UPDATE Of these, write_entry() and its call sites are probably most interesting because it modifies on-disk info. But this is stat info and can be retrieved via refresh, at least for porcelain commands. Other just uses ce_flags for local purposes. So, keeping track of "dirty" entries is just a matter of setting a flag in index modification functions exposed by read-cache.c. Except unpack-trees, the rest of the code base does not do anything funny behind read-cache's back. The actual patch is less valueable than the summary above. But if anyone wants to re-identify the above sites. Applying this patch, then this: diff --git a/cache.h b/cache.h index 430d021..1692891 100644 --- a/cache.h +++ b/cache.h @@ -267,7 +267,7 @@ static inline unsigned int canon_mode(unsigned int mode) #define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) struct index_state { - struct cache_entry **cache; + const struct cache_entry **cache; unsigned int version; unsigned int cache_nr, cache_alloc, cache_changed; struct string_list *resolve_undo; will help quickly identify them without bogus warnings. Signed-off-by: Nguyễn Thái Ngọc Duy <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'builtin/checkout.c')
1 files changed, 4 insertions, 4 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 3be0018..69f9efa 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -97,7 +97,7 @@ static int read_tree_some(struct tree *tree, const char **pathspec)
return 0;
-static int skip_same_name(struct cache_entry *ce, int pos)
+static int skip_same_name(const struct cache_entry *ce, int pos)
while (++pos < active_nr &&
!strcmp(active_cache[pos]->name, ce->name))
@@ -105,7 +105,7 @@ static int skip_same_name(struct cache_entry *ce, int pos)
return pos;
-static int check_stage(int stage, struct cache_entry *ce, int pos)
+static int check_stage(int stage, const struct cache_entry *ce, int pos)
while (pos < active_nr &&
!strcmp(active_cache[pos]->name, ce->name)) {
@@ -119,7 +119,7 @@ static int check_stage(int stage, struct cache_entry *ce, int pos)
return error(_("path '%s' does not have their version"), ce->name);
-static int check_stages(unsigned stages, struct cache_entry *ce, int pos)
+static int check_stages(unsigned stages, const struct cache_entry *ce, int pos)
unsigned seen = 0;
const char *name = ce->name;
@@ -321,7 +321,7 @@ static int checkout_paths(const struct checkout_opts *opts,
/* Any unmerged paths? */
for (pos = 0; pos < active_nr; pos++) {
- struct cache_entry *ce = active_cache[pos];
+ const struct cache_entry *ce = active_cache[pos];
if (ce->ce_flags & CE_MATCHED) {
if (!ce_stage(ce))